Final answer:
The need for further teaching is shown by the statement that a person should be repositioned every 4 hours, which is incorrect as the position should be changed every 2 hours to prevent pressure ulcers.
Step-by-step explanation:
The statement indicating the need for further teaching is: "If a person cannot turn himself or herself in bed, someone should help the person change position every 4 hours." This is because the currently accepted guideline for repositioning to prevent pressure ulcers is to change the person's position at least every 2 hours, not every 4 hours. Prolonged pressure can cause skin breakdown, and frequent repositioning helps avoid this.
Using foam pads to decrease pressure on bony areas, reporting redness that does not go away, and washing skin with warm water followed by moisturizing are all good practices to maintain skin integrity and prevent pressure ulcers.